page_title: Texas State Highway Loop 343
section_title: Route description
hierarchical_section_title: Texas State Highway Loop 343 / Route description
caption_attribution_description: English: The historic Lamar Boulevard Bridge located in Austin, Texas, United States.
context_page_description: Loop 343 is a 5.186-mile state-maintained roadway located in Austin, Texas.
context_section_description: Loop 343 begins in south Austin at the intersection of US 290/SH 71 and the southern terminus of Loop 360. It proceeds north along Lamar Boulevard for 3.5 miles (5.6 km) towards downtown Austin. Here, it crosses Lady Bird Lake on the Lamar Boulevard Bridge. This segment of Loop 343 is a four-lane heavily-developed urban road.
  At this point, Loop 343 heads east along Cesar Chavez Street for 1.6 miles (2.6 km), past Austin City Hall and the Austin Convention Center, to its terminus at I-35. This segment of Loop 343 is a four-lane downtown road.
caption: Loop 343 (Lamar Boulevard) crossing Town Lake
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